class Crystal::Macros::Select

Overview

A select expression.

Every expression node is equivalent to:

select
{% for when_clause in node.whens %}
  {{ when_clause }}
{% end %}
{% else_clause = node.else %}
{% unless else_clause.is_a?(Nop) %}
  else
    {{ else_clause }}
{% end %}
end

Defined in:

compiler/crystal/macros.cr

Instance Method Summary

Instance methods inherited from class Crystal::Macros::ASTNode

!=(other : ASTNode) : BoolLiteral !=, ==(other : ASTNode) : BoolLiteral ==, class_name : StringLiteral class_name, column_number : StringLiteral | NilLiteral column_number, doc : StringLiteral doc, doc_comment : MacroId doc_comment, end_column_number : StringLiteral | NilLiteral end_column_number, end_line_number : StringLiteral | NilLiteral end_line_number, filename : StringLiteral | NilLiteral filename, id : MacroId id, is_a?(type : TypeNode) : BoolLiteral is_a?, line_number : StringLiteral | NilLiteral line_number, nil? : BoolLiteral nil?, raise(message) : NoReturn raise, stringify : StringLiteral stringify, symbolize : SymbolLiteral symbolize, warning(message : StringLiteral) : NilLiteral warning

Instance Method Detail

def else : ASTNode #

Returns the #else of this select.


[View source]
def whens : ArrayLiteral(When) #

Returns the whens of this select.


[View source]